chapter 1 Heterosupramolecular Devices Based on Nanocrystalline Semiconductors / chapter 2 The Essential Interface: Studies in Dye-Sensitized Solar Cells / chapter 3 Photo-Induced Electron Transfer Reactivity at Nanoscale Semiconductor- Solution Interfaces: Case Studies with Dye-Sensitized SnO2-Water Interfaces -- chapter 4 Current Status of Dye-Sensitized Solar Cells / chapter 5 Spectroscopy and Dynamics of Layered Semiconductor Nanoparticles / chapter 6 Mechanisms of the Photocatalytic Transformation of Organic Compounds / chapter 7 Titanium Dioxide-Photocatalyzed Reactions of Organophosphorus Compounds in Aqueous Media -- chapter 8 Photocatalytic Oxidation of Gas-Phase Aromatic Contaminants / chapter 9 Design and Development of New Titanium Dioxide Semiconductor Photocatalysts -- chapter 10 Dye-Sensitized Solar Cells Based on Mesoscopic Oxide Semiconductor Films / chapter 11 Applications of Semiconductor Electro-Optical Properties to Chemical Sensing.